diff --git a/tests/inc/tests_core.h b/tests/inc/test_core.h
similarity index 57%
rename from tests/inc/tests_core.h
rename to tests/inc/test_core.h
index 8617a26..058dc8b 100644
--- a/tests/inc/tests_core.h
+++ b/tests/inc/test_core.h
@@ -1,7 +1,7 @@
 /**
- * @file tests_core.h
+ * @file test_core.h
  *
- * @brief Core functions to the tests
+ * @brief Core functions to the test
  *
  * @date 04/2021
  *
@@ -9,12 +9,17 @@
  *
  */
 
+#ifndef __TEST_CORE_H__
+#define __TEST_CORE_H__
+
 /*****************************************
  * Public Functions Prototypes
  *****************************************/
 
 /**
- * @brief Initialize tests core
+ * @brief Initialize test core
  *
  */
 void test_core_init(void);
+
+#endif // __TEST_CORE_H__
diff --git a/tests/src/tests_core.c b/tests/src/test_core.c
similarity index 75%
rename from tests/src/tests_core.c
rename to tests/src/test_core.c
index f03d8dc..3387397 100644
--- a/tests/src/tests_core.c
+++ b/tests/src/test_core.c
@@ -1,7 +1,7 @@
 /**
- * @file tests_core.c
+ * @file test_core.c
  *
- * @brief Core functions to the tests
+ * @brief Core functions to the test
  *
  * @date 04/2021
  *
@@ -9,7 +9,7 @@
  *
  */
 
-#include "tests_core.h"
+#include "test_core.h"
 #include "mcu.h"
 
 /*****************************************